CN218977321U - Front-mounted stalk chopping and returning device - Google Patents
Front-mounted stalk chopping and returning device Download PDFInfo
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- CN218977321U CN218977321U CN202222437705.2U CN202222437705U CN218977321U CN 218977321 U CN218977321 U CN 218977321U CN 202222437705 U CN202222437705 U CN 202222437705U CN 218977321 U CN218977321 U CN 218977321U
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Abstract
The utility model relates to a front-mounted stalk chopping and returning device which is arranged below a cutting table and corresponds to each group of ear picking units one by one; comprises a returning box body assembly, a cutter head, a blade and a clutch mechanism; the field returning box body assembly comprises a box body, wherein one end of the box body is a power input end, and the other end of the box body is a power output end; a transmission shaft is arranged in the box body, one end of the transmission shaft is meshed with the drive bevel gear through a first driven bevel gear, the other end of the transmission shaft is sequentially meshed with a third driven bevel gear and a fourth driven bevel gear through a second driven bevel gear, and the fourth driven bevel gear is coaxially connected with an output shaft; the cutter head is fixed on the output shaft, and a plurality of blades are uniformly distributed and fixed on the cutter head; the clutch mechanism is provided with a spline clutch transmission shaft which is connected with the drive bevel gear, and is connected with the central transmission shaft of the ear picking transmission box of the header when the clutch mechanism extends out of the power input end of the box body; in its state of moving back to the power input end of the box body, it is separated from the central transmission shaft. The device occupies small space and has good shredding effect.
Description
Technical Field
The utility model belongs to the technical field of agricultural machinery corn harvesters, and particularly relates to a front-mounted stalk chopping and returning device.
Background
The existing corn harvester header mainly comprises main components of header shell welding, auger assembly, spike picking assembly, transmission assembly, left side cover assembly, right side cover assembly, middle shield assembly and the like. The ear picking assembly is used for realizing ear picking and stem pulling, and consists of a plurality of groups of ear picking units, each group of ear picking units corresponds to one row of corns when corn harvesting is carried out, each group of ear picking units corresponds to one group of ear picking transmission boxes (which are main structures of transmission assembly), the upper parts of the ear picking transmission boxes output ear picking power, and the front sides of the ear picking transmission boxes output stem pulling power, so that ear picking and stem pulling are realized.
The existing corn harvester is provided with a front-mounted stalk cutting device and a rear-mounted stalk cutting device, the front-mounted mode is arranged below a header, a roll-shaped front-mounted stalk cutting and returning device is generally adopted, and the structure has a large occupied space and can influence the height of the header and the ground harvesting lifting. The rear mode is arranged behind the mounting position of the header and is positioned below the frame between the front wheel and the rear wheel. The rear-mounted mode has the defects of rear steering resistance and heavy steering, and has the problem that the stalks which are pressed by the tires are possibly cut up in place when harvesting.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art and provide a front-mounted stalk shredding and returning device which has the advantages of simple structure, small occupied space and improved shredding effect.
The above object of the present utility model is achieved by the following technical solutions:
the utility model provides a leading stem stalk cuts up still field device which characterized in that: the front-mounted stalk cutting and returning device is arranged below the header and at a position corresponding to each group of ear picking units one by one; comprises a returning box body assembly, a cutter head, a blade and a clutch mechanism; the field returning box body assembly comprises a box body, wherein one end of the box body is a power input end, and the other end of the box body is a power output end;
a transmission shaft is arranged in the box body, one end of the transmission shaft, which is close to a dynamic input end of the box body, is in rotary supporting fit with an inner hole wall of the box body through a bearing, a first driven bevel gear is integrally processed or mounted at the end of the transmission shaft, a driving bevel gear is rotatably supported in a dynamic input end of the box body through the bearing, an inner hole of the driving bevel gear is a spline hole, and the driving bevel gear and the first driven bevel gear form tooth meshing; the outer circle of the second driven bevel gear is rotatably supported and matched with the inner hole wall of the box body through a bearing; a third driven bevel gear and a fourth driven bevel gear are rotatably arranged in the power output end of the box body through respective bearings respectively; the third driven bevel gear is a duplex gear with bevel gears arranged at two ends, one end of the third driven bevel gear is meshed with the second driven bevel gear, the other end of the third driven bevel gear is meshed with the fourth driven bevel gear, the fourth driven bevel gear is integrally provided with an output shaft or is coaxially connected with the output shaft, and the output shaft is a tail end power output piece;
the cutter disc is coaxially fixed on the output shaft; the number of the blades is at least two, and a plurality of blades are fastened on the cutter head along the circumferential direction through screws;
the clutch mechanism comprises a spline clutch transmission shaft which is in spline fit with an inner hole of the drive bevel gear in an axially movable mode, and the clutch transmission shaft is connected with a central transmission shaft of a spike picking transmission box of the header through a spline under the state that the clutch transmission shaft extends out of a power input end of the box body, so that the power of the spike picking transmission box is transmitted to the clutch transmission shaft; and in the state that the clutch transmission shaft moves back to the power input end of the box body, the clutch transmission shaft is separated from the central transmission shaft of the ear picking transmission box, so that the power input is cut off.
Further: the clutch mechanism comprises a clutch shaft seat, a clutch transmission shaft, a clutch pin shaft, a clutch operating rod, a reset spring and an adjusting spring;
the clutch shaft seat is arranged at one end of the box body, which is positioned at the power input end, the clutch shaft seat is internally provided with a mounting hole which is coaxially arranged with the inner hole of the drive bevel gear, and one end of the clutch shaft seat in the mounting hole is rotatably connected with the inner end of the clutch transmission shaft through a bearing; the other end in the mounting hole of the clutch shaft seat is connected with the inner end of the clutch pin shaft; an end cover is fixedly arranged on the side wall of the box body at a position corresponding to the clutch pin shaft, a pin shaft hole is formed in the end cover, and the clutch pin shaft extends out of the pin shaft hole; a sleeve column is arranged at the inner side of the end cover at a position corresponding to the pin shaft hole in an inward extending manner, the reset spring is sleeved outside the sleeve column, one end of the reset spring is in compression contact with the inner wall surface of the box body, and the other end of the reset spring is in compression contact with one end, far away from the clutch transmission shaft, of the clutch shaft seat;
the clutch operation rod is a multi-bending rod and is arranged on the outer side of the box body, and the whole clutch operation rod is arranged in parallel with the transmission shaft; the clutch operation rod comprises a rotating center rod section, a first eccentric rod section connected with one end of the rotating center rod section, a second eccentric rod section connected with the first eccentric rod section, and an L-shaped bent rod section connected with the other end of the center rod section; the rotary center rod section, the first eccentric rod section and the second eccentric rod section are straight rod sections which are arranged in parallel, and the first eccentric rod section and the second eccentric rod section are two rod sections with opposite eccentric directions relative to the rotary center rod section; the end part of the second eccentric rod end is vertically connected with the extending end of the clutch pin shaft; an adjusting end plate is fixedly arranged on the end face, which is close to one end of the power output end and is perpendicular to the axial direction of the transmission shaft, outside the box body, a rotating center hole for the rotating center rod end of the clutch operating rod to pass through is formed in the adjusting end plate, two clutch limiting holes are formed in the adjusting end plate, and the two clutch limiting holes are located on the same excircle taking the rotating center hole as the center; the rotary central rod section passes through the rotary central hole, a spring blocking plate is arranged on the rotary central rod section, the regulating spring is sleeved on the rotary central rod section, one end of the regulating spring is tightly pressed with the inner side surface of the regulating end plate, and the other end of the regulating spring is tightly pressed with the spring blocking plate.
Further: the other end in the mounting hole of the clutch shaft seat is connected with the inner end of the clutch pin shaft in a matching way through the stepped hole and the stepped shaft end.
Further: the output shaft adopts the integral key shaft, the cutter disc forms spline fit with the output shaft through the spline hole, and the cutter disc is fixed on the output shaft through installing a baffle plate and a locking screw at the end part of the spline shaft.
The utility model has the advantages and positive effects that:
1. the field returning device is arranged below the header and in front of the tire, so that the defects that the tire rolls stalks and cannot be cut up in place can be avoided, a better cutting effect can be achieved, and the hidden danger of heavy steering is solved; in addition, the defect of power loss of front-end rolling returning to the field in the market is avoided, the structure is space-saving, the height of the header and the ground harvesting lifting is not affected, and harvesting cannot be affected due to the influence of the harvesting environment.
2. The front-mounted stalk chopping and returning device adopts a rotary-cut structure, and has the advantages of small occupied space, simple transmission structure, convenient clutch operation and good applicability.
Drawings
FIG. 1 is a front view of the present utility model (with a stripper gear box attached);
FIG. 2 is a top view of the present utility model (with a stripper gearbox attached);
FIG. 3 is a perspective view of the present utility model (with a spike picking gear box attached);
FIG. 4 is an enlarged view of a portion of FIG. 3;
FIG. 5 is a cross-sectional view of the field return housing assembly of the present utility model;
FIG. 6 is a cross-sectional view of a stripper gear box in accordance with the present utility model;
fig. 7 is a schematic view of the mounting position of the present utility model on a header.
Detailed Description
The structure of the present utility model will be further described by way of examples with reference to the accompanying drawings. It should be noted that the present embodiments are illustrative and not restrictive.
Referring to fig. 1-7, the front-end stalk shredding and returning device comprises: the front-mounted stalk cutting and returning device is arranged at a position below the cutting table, which corresponds to each group of ear picking units one by one, namely, a group of front-mounted stalk cutting and returning device is arranged below each group of ear picking units. The front-mounted stalk chopping and returning device mainly comprises: the returning box body is provided with a cutter head 4, a blade 5 and a clutch mechanism 2. The field returning box body assembly comprises a box body 1.4, wherein one end of the box body is a power input end, and the other end of the box body is a power output end. The power input end of the box body is connected with one end of the ear picking transmission box. The power output end of the box body is used for installing a cutter head. The power output end of the box body and the power input end of the box body are arranged front and back. The front-mounted stalk shredding and returning device is connected with a central transmission shaft of a ear picking transmission box 3 on a header 6 through a power input end, so that power input is realized, and the device has the following specific structure:
a transmission shaft 1.5 is arranged in the box body and is arranged along the front-back direction. One end of the transmission shaft, which is close to the dynamic input end of the box body, is in rotary supporting fit with the inner hole wall of the box body through a bearing, a first driven bevel gear 1.6 is integrally processed or mounted at the end of the transmission shaft, a driving bevel gear 1.7 is rotatably supported in the dynamic input end of the box body through the bearing, the inner hole of the driving bevel gear is a spline hole, and the driving bevel gear and the first driven bevel gear form tooth meshing. The end of the transmission shaft, which is close to the power output end of the box body, is connected with a second driven bevel gear 1.3 through a spline, and the outer circle of the second driven bevel gear is rotatably supported and matched with the inner hole wall of the box body through a bearing, so that the two ends of the transmission shaft are supported inside the box body. A third driven bevel gear 1.2 and a fourth driven bevel gear 1.1 are respectively rotatably arranged in the power output end of the box body through respective bearings. The third driven bevel gear is a duplex gear with bevel gears arranged at two ends, one end bevel gear of the third driven bevel gear is meshed with the second driven bevel gear, the other end bevel gear of the third driven bevel gear is meshed with the fourth driven bevel gear, the fourth driven bevel gear is integrally provided with an output shaft or coaxially connected with the output shaft, and the output shaft adopts a spline shaft and is a tail end power output piece and is used for outputting power so as to drive the cutterhead to rotate.
The cutter disc is in spline fit with the output shaft through a spline hole, and a baffle plate and a locking screw are arranged at the end part of the spline shaft to fix the cutter disc on the output shaft. The number of the blades is at least two, and a plurality of blades are fastened on the cutterhead along the circumferential direction through screws. The blades are used for shredding the stalks.
The clutch mechanism is used for realizing power connection and disconnection between the assembly of the returning box body and the ear picking transmission box. The clutch mechanism comprises a clutch shaft seat 2.7, a clutch transmission shaft 2.6, a clutch pin shaft 2.5, a clutch operating rod 2.2, a return spring 2.8 and an adjusting spring 2.4.
The clutch shaft seat is arranged at the position of the power input end in the box body, a mounting hole is formed in the clutch shaft seat, the mounting hole and the inner hole of the drive bevel gear are coaxially arranged, one end in the mounting hole of the clutch shaft seat is rotatably connected with the inner end of the clutch transmission shaft through a bearing, the clutch transmission shaft adopts a spline shaft mode, and the clutch transmission shaft coaxially penetrates through the inner hole of the drive bevel gear, and the clutch transmission shaft and the inner hole of the drive bevel gear form spline fit connection. The other end in the mounting hole of the clutch shaft seat is connected with the inner end of the clutch pin shaft, and specifically, the clutch shaft seat can be connected in a matching mode of a stepped hole and a stepped shaft end shown in fig. 5. An end cover 1.8 is fixedly arranged on the side wall of the box body at a position corresponding to the clutch pin shaft through a screw, a pin shaft hole is formed in the end cover, and the clutch pin shaft extends out of the pin shaft hole. The sleeve column is arranged at the inner side of the end cover in an inward extending mode at the position corresponding to the pin shaft hole, the reset spring is sleeved outside the sleeve column, one end of the reset spring is in pressing contact with the inner wall surface of the box body, and the other end of the reset spring is in pressing contact with one end, far away from the clutch transmission shaft, of the clutch shaft seat.
The clutch operation rod is a multi-bending rod and is arranged on the outer side of the box body, and the whole clutch operation rod is arranged in parallel with the transmission shaft and mainly comprises a rotating center rod section, a first eccentric rod section connected with one end of the rotating center rod section, a second eccentric rod section connected with the first eccentric rod section and an L-shaped bending rod section connected with the other end of the center rod section. The rotary center rod section, the first eccentric rod section and the second eccentric rod section are straight rod sections which are arranged in parallel, and the first eccentric rod section and the second eccentric rod section are two rod sections with opposite eccentric directions relative to the rotary center rod section. The end part of the second eccentric rod end is vertically connected with the extending end of the clutch pin shaft, in particular, a radial rod hole can be formed in the extending end of the clutch pin shaft, and the second eccentric rod section is inserted in the rod hole in a rotatable mode. An adjusting end plate 2.1 is fixedly arranged on the end face, which is close to one end of the power output end and is perpendicular to the axial direction of the transmission shaft, outside the box body, a rotating center hole through which the rotating center rod end of the clutch operating rod passes is formed in the adjusting end plate, two clutch limiting holes 2.1.1 are formed in the adjusting end plate, and the two clutch limiting holes are located on the same excircle with the rotating center hole as the center. The rotary center rod section passes through the rotary center hole, a spring blocking plate 2.3 is arranged on the rotary center rod section, the adjusting spring is sleeved on the rotary center rod section, one end of the adjusting spring is tightly pressed with the inner side surface of the adjusting end plate, and the other end of the adjusting spring is tightly pressed with the spring blocking plate.
By adopting the clutch mechanism, the clutch pin shaft can be driven to move along the axial direction by rotating the clutch operating rod, so that the clutch shaft seat and the clutch transmission shaft are driven to synchronously move along the axial direction, when the clutch operating rod rotates to a position where the end part of the L-shaped bent rod section is aligned with one clutch limiting hole, the end part of the L-shaped bent rod section is inserted into the clutch limiting hole, at the moment, the clutch transmission shaft extends out from the power output end of the box body and is connected with the central transmission shaft 3.1 of the ear picking transmission box through a spline, the power of the ear picking transmission box is transmitted to the clutch transmission shaft, the clutch transmission shaft transmits the power to the drive bevel gear, the power input assembled by the field returning box body is realized, the cutter disc and the cutter blade are driven to rotate, and the stalks are cut up; when the stalks do not need to be chopped, the L-shaped bent rod section of the clutch operation rod is pulled outwards, the end part of the L-shaped bent rod is separated from the clutch limiting hole, the clutch operation rod is rotated reversely, the clutch operation rod is rotated to a position where the end part of the L-shaped bent rod section is aligned with the other clutch limiting hole, the end part of the L-shaped bent rod section is inserted into the other clutch limiting hole, at the moment, the clutch transmission shaft is pulled back into the box body, and the clutch transmission shaft is separated from the central transmission shaft of the ear picking transmission box, so that power input is cut off. The above-mentioned reset spring plays the automatic reset that makes clutch mechanism from off to on. The adjusting spring plays a role in enabling the end part of the L-shaped bent rod to be automatically inserted into the clutch limiting hole, and ensures that the end part of the L-shaped bent rod cannot be separated from the clutch limiting hole in the normal harvesting operation process.
Although the embodiments of the present utility model and the accompanying drawings have been disclosed for illustrative purposes, those skilled in the art will appreciate that: various substitutions, changes and modifications are possible without departing from the spirit of the utility model and the appended claims, and therefore the scope of the utility model is not limited to the embodiments and the disclosure of the drawings.
Claims (4)
1. The utility model provides a leading stem stalk cuts up still field device which characterized in that: the front-mounted stalk cutting and returning device is arranged below the header and at a position corresponding to each group of ear picking units one by one; comprises a returning box body assembly, a cutter head, a blade and a clutch mechanism; the field returning box body assembly comprises a box body, wherein one end of the box body is a power input end, and the other end of the box body is a power output end;
a transmission shaft is arranged in the box body, one end of the transmission shaft, which is close to a dynamic input end of the box body, is in rotary supporting fit with an inner hole wall of the box body through a bearing, a first driven bevel gear is integrally processed or mounted at the end of the transmission shaft, a driving bevel gear is rotatably supported in a dynamic input end of the box body through the bearing, an inner hole of the driving bevel gear is a spline hole, and the driving bevel gear and the first driven bevel gear form tooth meshing; the outer circle of the second driven bevel gear is rotatably supported and matched with the inner hole wall of the box body through a bearing; a third driven bevel gear and a fourth driven bevel gear are rotatably arranged in the power output end of the box body through respective bearings respectively; the third driven bevel gear is a duplex gear with bevel gears arranged at two ends, one end of the third driven bevel gear is meshed with the second driven bevel gear, the other end of the third driven bevel gear is meshed with the fourth driven bevel gear, the fourth driven bevel gear is integrally provided with an output shaft or is coaxially connected with the output shaft, and the output shaft is a tail end power output piece;
the cutter disc is coaxially fixed on the output shaft; the number of the blades is at least two, and a plurality of blades are fastened on the cutter head along the circumferential direction through screws;
the clutch mechanism comprises a spline clutch transmission shaft which is in spline fit with an inner hole of the drive bevel gear in an axially movable mode, and the clutch transmission shaft is connected with a central transmission shaft of a spike picking transmission box of the header through a spline under the state that the clutch transmission shaft extends out of a power input end of the box body, so that the power of the spike picking transmission box is transmitted to the clutch transmission shaft; and in the state that the clutch transmission shaft moves back to the power input end of the box body, the clutch transmission shaft is separated from the central transmission shaft of the ear picking transmission box, so that the power input is cut off.
2. The prepositive stalk shredding and returning device according to claim 1 is characterized in that: the clutch mechanism comprises a clutch shaft seat, a clutch transmission shaft, a clutch pin shaft, a clutch operating rod, a reset spring and an adjusting spring;
the clutch shaft seat is arranged at one end of the box body, which is positioned at the power input end, the clutch shaft seat is internally provided with a mounting hole which is coaxially arranged with the inner hole of the drive bevel gear, and one end of the clutch shaft seat in the mounting hole is rotatably connected with the inner end of the clutch transmission shaft through a bearing; the other end in the mounting hole of the clutch shaft seat is connected with the inner end of the clutch pin shaft; an end cover is fixedly arranged on the side wall of the box body at a position corresponding to the clutch pin shaft, a pin shaft hole is formed in the end cover, and the clutch pin shaft extends out of the pin shaft hole; a sleeve column is arranged at the inner side of the end cover at a position corresponding to the pin shaft hole in an inward extending manner, the reset spring is sleeved outside the sleeve column, one end of the reset spring is in compression contact with the inner wall surface of the box body, and the other end of the reset spring is in compression contact with one end, far away from the clutch transmission shaft, of the clutch shaft seat;
the clutch operation rod is a multi-bending rod and is arranged on the outer side of the box body, and the whole clutch operation rod is arranged in parallel with the transmission shaft; the clutch operation rod comprises a rotating center rod section, a first eccentric rod section connected with one end of the rotating center rod section, a second eccentric rod section connected with the first eccentric rod section, and an L-shaped bent rod section connected with the other end of the center rod section; the rotary center rod section, the first eccentric rod section and the second eccentric rod section are straight rod sections which are arranged in parallel, and the first eccentric rod section and the second eccentric rod section are two rod sections with opposite eccentric directions relative to the rotary center rod section; the end part of the second eccentric rod end is vertically connected with the extending end of the clutch pin shaft; an adjusting end plate is fixedly arranged on the end face, which is close to one end of the power output end and is perpendicular to the axial direction of the transmission shaft, outside the box body, a rotating center hole for the rotating center rod end of the clutch operating rod to pass through is formed in the adjusting end plate, two clutch limiting holes are formed in the adjusting end plate, and the two clutch limiting holes are located on the same excircle taking the rotating center hole as the center; the rotary central rod section passes through the rotary central hole, a spring blocking plate is arranged on the rotary central rod section, the regulating spring is sleeved on the rotary central rod section, one end of the regulating spring is tightly pressed with the inner side surface of the regulating end plate, and the other end of the regulating spring is tightly pressed with the spring blocking plate.
3. The front-end stalk shredding and returning device according to claim 2, characterized in that: the other end in the mounting hole of the clutch shaft seat is connected with the inner end of the clutch pin shaft in a matching way through the stepped hole and the stepped shaft end.
4. The prepositive stalk shredding and returning device according to claim 1 is characterized in that: the output shaft adopts the integral key shaft, the cutter disc forms spline fit with the output shaft through the spline hole, and the cutter disc is fixed on the output shaft through installing a baffle plate and a locking screw at the end part of the spline shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222437705.2U CN218977321U (en) | 2022-09-15 | 2022-09-15 | Front-mounted stalk chopping and returning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222437705.2U CN218977321U (en) | 2022-09-15 | 2022-09-15 | Front-mounted stalk chopping and returning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218977321U true CN218977321U (en) | 2023-05-09 |
Family
ID=86226117
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222437705.2U Active CN218977321U (en) | 2022-09-15 | 2022-09-15 | Front-mounted stalk chopping and returning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218977321U (en) |
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2022
- 2022-09-15 CN CN202222437705.2U patent/CN218977321U/en active Active
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